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From: Serhiy Storchaka <storchaka@gmail.com>
Subject: Re: Find and Replace Simplification
Date: Sat, 20 Jul 2013 14:48:18 +0300
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19.07.13 21:08, Skip Montanaro написав(ла):
> Serhiy> The string replace() method is fastest (at least in Python 3.3+). See
> Serhiy> implementation of html.escape() etc.
> I trust everybody knows by now that when you want to use regular
> expressions you should shell out to Perl for the best performance. :-)

If you want to use regular expressions Python is not the best choice. 
But if you want to use Python regular expressions sometimes are the best 
choice.